Not necessarily , says heike wiese , a linguist at the university of potsdam who has written a new book on the topic .
波茨坦大学的一位名叫海克维泽的语言学家在他出的一本关于这个话题的新书中说，这种情况并不一定。
Stefan rahmstorf of the potsdam institute for climate impact research has examined data stretching over 125 years that link increases in sea temperatures to rises in sea levels .
